package com.example.nbb.Dao;

import com.example.nbb.Entity.LooseChangeEntity;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface LooseChangeDao {

    LooseChangeEntity selectByUserId(int userId);//查

    int decreaseLooseChange(int userId,double looseChange);//改--减

    int augmentLooseChange(int userId,double looseChange);//改--加




}
